Answer:
Conventional sources of energy is also called non-renewable sources of energy while non conventional sources of energy is called renewable sources of energy.
An example of conventional energy is coal, crude oil and natural gas. The advantage is the availability and affordability. The disadvantage is the level of air pollutants such as CO2 and CO it releases to the atmosphere which is harmful as it poses a risk of air borne illnesses.
An example of non conventional energy is the sun, wind , water etc. The advantage is that it reduces the risk of air pollution and keeps the environment clean as no toxic substances are being released into the atmosphere when used. The disadvantage is they are expensive and aren’t available all year round.
Outer core.
The densest layer is the inner core but it is not given as an option. The outer core is closet to the inner core, therefore it is the correct option.
Answer:
Taiga
Explanation:
The territory of Russia is located in a taiga biome.
Answer:
c. is the most common atmospheric gas.
Explanation:
Nitrogen gas is the most abundant gas in the atmosphere. This gas is about 78% of total amount of gas within the atmosphere.
- The earth's atmosphere is a mixture of many gases.
- Nitrogen is the most dominant of all the gases.
- Oxygen is about 21% and closely follows Nitrogen in terms of the volume it occupies.
- Several processes living and non-living utilizes nitrogen
Answer:
Feeding the world is challenging because we dont have enough workers/resources to be able to travel/find people to help feed because it costs a lot of money.
Explanation:
not sure?? you can delete if its wrong